Mikasa overhears Eren say that he likes stylish girls, so she tries to be stylish.
While part of the 104th Training Corps, Mikasa overhears Eren talking to Armin. In response to a question, Eren says that he likes stylish girls, which Sasha notes is the polar opposite of Mikasa. When that depresses Mikasa, Sasha tries to cheer her up by saying that Mikasa's scarf is probably a big part of her style.
Hearing that Mikasa is trying to be stylish, Krista suggests shortening Mikasa's skirt to show off her legs, until she sees that reveals Mikasa's muscled calves. Annie tells Krista good luck with trying to make Mikasa stylish, though after hearing that a stylish girl is Eren's type Annie wonders if she should change her hairpin.
Sasha and Krista complete Mikasa's makeover by giving her leggings, redoing her scarf and hair, and adding a pair of lensless glasses for an intellectual look.
When Mikasa next sees Eren in the mess hall he notices that her hair is different and asks if she just woke up. He also likes the muscles he can see through her leggings.
Krista and Sasha conclude that Eren would never actually go for a stylish girl. Mikasa does not intend to keep dressing up, but thinks the effort was worth it because she and Eren got to talk for a long time.
Meanwhile, Bertolt notices that Annie has changed her hairpin.